Calcium Chloride (CaCl2) is used as a brine for completion, workover and packer fluids in water and oil based drilling fluids and used in invert emulsion fluids.

Application/Function

Used in drilling fluids as a means of producing dense brines, which are applied in completion, workover, gravel-packing, perforating, and packer fluids because of the divalent charge, less commonly used in reservoir drill-in fluids.

Can be used in invert emulsion fluids where it is added to the disperse, aqueous phase to balance chemical activity with the formation and limit osmotic effects.

Advantages

Can be used in invert emulsion fluids where it is added to the disperse, aqueous phase to balance chemical activity with the formation and limit osmotic effects

Widely used throughout the oilfield

Technical Data

Appearance

White powder

Purity

94%/97%

pH

8.0-10.0

Recommended Treatment

Calcium Chloride is soluble up to a density of 11.6 pounds per gallon in water. See chart on following page.